Colombian Oldfield Mouse vs Red-billed Duck

Thomasomys dispar compared with Anas erythrorhyncha

Key Differences

• Colombian Oldfield Mouse is Data Deficient while Red-billed Duck is Least Concern.

Taxonomic Classification

Rank	Colombian Oldfield Mouse	Red-billed Duck
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum same	Chordata (척삭동물)	Chordata (척삭동물)
Class	Mammalia (포유류)	Aves (새)
Order	Rodentia (설치류)	Anseriformes (기러기목)
Family	Cricetidae	Anatidae
Genus	Thomasomys	Anas
Species	Thomasomys dispar	Anas erythrorhyncha

Evolutionary Relationship

Colombian Oldfield Mouse and Red-billed Duck share a common ancestor at the Phylum level: Chordata. (척삭동물)

Conservation Status

Colombian Oldfield Mouse

DD — Data Deficient

Red-billed Duck

LC — Least Concern

Physical Characteristics

Attribute	Colombian Oldfield Mouse	Red-billed Duck
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Colombian Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Red-billed Duck

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Found across Europe (6 countries) and South America (Ecuador).

Colombian Oldfield Mouse

<em>Thomasomys dispar</em>, commonly known as the Colombian Oldfield Mouse, is a small rodent species belonging to the genus <em>Thomasomys</em> within the family Cricetidae. This species is classified as Data Deficient, indicating that insufficient information is currently available to evaluate its conservation status with confidence. It has been documented in Colombia, where it inhabits diverse terrestrial and aquatic-adjacent environments. Members of the genus <em>Thomasomys</em> are typically associated with high-altitude Andean habitats, including páramo grasslands, shrublands, and montane forest edges, where they occupy ground-level microhabitats and burrow in soft soils. These mice are generally omnivorous, consuming seeds, plant material, and invertebrates, though specific dietary data for <em>Thomasomys dispar</em> have not been recorded. Biological traits of this species remain poorly documented in the scientific literature. The Data Deficient classification highlights the need for targeted surveys in Colombian Andean regions to determine population size, distribution, and the ecological requirements of this poorly known rodent.

Red-billed Duck

붉은부리오리(Anas erythrorhyncha)는 IUCN 적색목록에서 최소우려(LC)로 분류된다. 분포 범위 전역에서 흔하고 개체 수가 안정적이며 즉각적인 보전 우려가 없다.